变量和数字的奇怪逻辑行为
Strange Logic Behavior with Variable and Number
假设我定义 a 和 b 如下：
a = 1
b = 1
那我测试一下：
a == 1
#True
5>4
#True
a==1 & b==1
#True
5>4 & 4>3
#True
a==1 & 5>4
#False
最后一个是怎么回事？我希望能够测试最后一个不等式并得到 True.
的结果
在Python &中是针对数字的位运算，不是逻辑。请改用 and 和 or。
Unlike C, all comparison operations in Python have the same priority, which is lower than that of any arithmetic, shifting or bitwise operation. Also unlike C, expressions like a < b < c have the interpretation that is conventional in mathematics:
这意味着：
a==1 & 5>4 is equal to
a == ( 1 % 5 ) > 4
a == 1 > 4
True > 4
False
假设我定义 a 和 b 如下：
a = 1
b = 1
那我测试一下：
a == 1
#True
5>4
#True
a==1 & b==1
#True
5>4 & 4>3
#True
a==1 & 5>4
#False
最后一个是怎么回事？我希望能够测试最后一个不等式并得到 True.
在Python &中是针对数字的位运算，不是逻辑。请改用 and 和 or。
Unlike C, all comparison operations in Python have the same priority, which is lower than that of any arithmetic, shifting or bitwise operation. Also unlike C, expressions like a < b < c have the interpretation that is conventional in mathematics:
这意味着：
a==1 & 5>4 is equal to
a == ( 1 % 5 ) > 4
a == 1 > 4
True > 4
False